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#1
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90 420sel engine noise
I have a 90 420sel with 132k. I have had the timing chain done about 22k miles ago. I do have a little noise from the lifters that has been there for a little while. the other day, I noticed almost a knock in what sounded like the front of the engine. I revved the motor and it did not stop. I pulled it into drive and it quit. I never heard it again that day. Then the next day I heard it again and through the same procedure, it stopped. Can anyone tell me what this might be or if I am looking at a major repair?
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#2
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Are you hearing this knocking noise primarily during the warm up cycle?
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Scott, did you ever figure out what the knocking was on your car?
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#4
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Air pump?
My 420 was doing that, but only when started cold. Once the engine warmed up, as designed, the air pump no longer ran, so no more noise. I unplugged it, since my state does not test for emissions, and had no more problems.
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* * -- Paul W. (The Benzadmiral) ('03 Buick Park Avenue, charcoal/cream) Formerly: '97 C230, smoke silver/parchment; '86 420SEL, anthracite/light grey; '84 280CE (W123), dark blue/palomino |
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